Perforated tile for furnace-linings



(Specimens.)

W. HUSTON.

PERFORATED TILE FOR FURNACE LININGS.

Patented May 5, 1885.

u. wanna mm phec wmm m. u. c.

20 to make these slabs of ordinary fire-clay-that UNITED STATES PATENT OFFICE.

WILLIAM HUSTON, OF WILMINGTON, DELAWARE, ASSIGNOR TO JABEZ O.

GILBERT, OF BROOKLYN, NEW YORK.

PERFORATED TILE FOR FURNACE-LININGS.

SPECIFICATION forming part of Letters Patent No. 317,459, dated May 5, 1885.

Application filed February 2, 1885.

To all whom it may concern.-

Be it known that I, WILLIAM HUSTON, a citizen of the United States, and a resident of Wilmington, Delaware, have invented an Improved Perforated Tile for Furnace-Linin gs,

of which the following is a specification.

There are many different kinds of furnaces in which perforated tiles or slabs are used for subdividing volumes of the products of combustion. In locomotive fire-boxes,forinstance, such tiles are often arranged in an inclined position in the fire-boxes to partly intercept the products of combustion before they reach the flue-tubes. Perforated slabs are also used in furnaces for admitting volumes ofair in the condition of numerous jets to the products of combustion, and these slabs are in all cases subjected to heat of more or less intensity. It has been the practice prior to my invention is, the clay of which ordinary fire-bricks are made-41nd this clay is available as arefractory material in the construction of furnaces, although those surfaces of the bricks which are most exposed to the heat become more or less vitrified. This vitrification or fluxin g is a source of much difficulty in the use of perforated slabs or tiles of the character referred to, for the holes are liable to become more or 0 less choked, and the removal of the obstructions is a difficult and tedious operation.

I have produced a perforated tile or slab the holes in which always remain unobstructed, no matter what the degree of heat may be 3 5 to which it is subjected. This perforated tile is made of glass-makers clay, a well-known composition used by glassmakersin the manul (Specimens) facture of their melting-pots. This composition consists mainly of German clay, a well known article of commerce, and this is mixed with old meltingpots, pulverized, and some-' the glass-makers clay is molded or otherwise u formed and the holes made while the clay is in a plastic condition, the slab being afterward properly baked, as in the case of melting-pots made of the same clay.

I have made perforated slabs or tiles two and three-quarters inches thick, with holes of five-eighths of an inch in diameter and a little over an inch from center to center, and these slabs have resisted. intense heat without any such fluxin g as to obstruct the perforations.

I claim as my invention and. as a new air ticle of manufacture- The within-described slab for locomotive fire-boxes and other furnaces, the said slab consisting of glass-makers clay, and being perforated, as and for the purpose set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

WILLIAM HUSTON.

Witnesses HENRY BOSSERT, HARRY SMITH. 

